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Download fileExperimental and numerical methods to analyse deformation and damage in random fibrous networks
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posted on 2019-09-12, 10:20 authored by Emrah Sozumert, Emrah DemirciEmrah Demirci, Vadim SilberschmidtVadim SilberschmidtDeformation and damage behaviours of random fibrous networks are investigated with experimental and numerical methods at local (fibre) and global (specimen) levels. Nonwoven material was used as an example of fibrous network, with its individual fibres were extracted and tested with a universal testing system in order to assess their material properties. The fibres demonstrated a nonlinear time-dependent response to stretching. For analysis of notch sensitivity, undamaged nonwoven specimens and those with various notch shapes were analysed with fabric-level tensile tests and finite-element simulations. A level of strains around notch tips was tracked in simulations, demonstrating that the material was notch-sensitive, but load-transfer mechanisms were different than those in standard homogeneous materials. The notch shape also affected the rate of damage growth in the main directions. A good agreement between experimental and numerical damage patterns was observed. Also, the notch shape affected the strength and toughness of the fibrous network.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Plasticity, Damage and Fracture in Advanced MaterialsPages
151 - 174Publisher
Springer International PublishingVersion
- AM (Accepted Manuscript)
Rights holder
© Springer Nature Switzerland AGPublisher statement
The final authenticated version is available online at https://doi.org/10.1007/978-3-030-34851-9.Publication date
2019-11-27Copyright date
2020ISBN
9783030348502; 9783030348519Publisher version
Book series
Advanced Structured Materials;121Language
- en